Javascript & jQuery validation

I have a form that needs to do 2 things when the submit button is clicked:
1. validate (jQuery code working correctly)
2. show a popup window "Please wait" message (also working)

But since I added the onclick to the button, it no longer validates.  I'm sure it's order of operations.  Can someone please show the right way to accomplish both?

Code for item #1:

    <script type='text/javascript'>
    $(document).ready(function(){
		$("#cc-form").validate({
			rules: {
			  cbAgree: "required",
              cardtype: "required",
              ccnum: {
                required: true,
                creditcard: true
                },
              ccexp: {
                required: true,
				minlength:4 ,
                digits: true
			    },
              cvv: {
                required: true,
				minlength:3,
                digits: true
                }
              },
			messages: {
				cbAgree: "Terms and Conditions must be read before submitting your donation.",
				cardtype: "You must select a credit card type.",
				cvv: {
					required: "Please enter the CVV code.",
					minlength: "CVV must include three numbers.",
					digits: "You must enter numbers."
				},
				ccexp: {
					required: "Please enter the CVV code.",
					minlength: "Credit card expiration must include four numbers.",
					digits: "You must enter numbers."
				}
			}
          });
        });
    </script>

Code for item #2:

	<script type="text/javascript">
		function showWait() {
			centerPopup();
			loadPopup();
			document.forms['cc-form'].submit();
		}
	</script>

And the button code:

<input class='pill-button' type='submit' name="DB" value='Start' onclick="showWait()"/>